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<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>表格</title>
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<body>
    <table border="1" width="400px">
        <caption>课程表</caption>
        <tr>
            <th>时间</th>
            <th>周一</th>
            <th>周二</th>
            <th>周三</th>
            <th>周四</th>
            <th>周五</th>          
        </tr>
        <tr>
            <td rowspan="2">上午</td>
            <td>数学</td>
            <td>语文</td>
            <td rowspan="2">体育</td>
            <td>化学</td>
            <td>语文</td>
        </tr>
        <tr>
            <td>物理</td>
            <td>化学</td>
            <td>生物</td>
            <td>化学</td>
        </tr>
        <tr>
            <td>午休</td>
            <td colspan="5" align="center" ><b>12:00-14:00</b></td>
        </tr>
        <tr>
            <td>下午</td>
            <td>英语</td>
            <td rowspan="2">数学</td>
            <td>语文</td>
            <td rowspan="2">物理</td>
            <td>数学</td>
        </tr>
        <tr>
            <td>下午</td>
            <td>语文</td>
            <td>生物</td>
            <td>班会</td>
        </tr>
    </table>
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